Ventilator for windows.



R. L. EGGLESTON.

VENTILATOR FOR WINDOWS.

APPLICATION FILED MAY a, 1913.

3 SHEETS-SHEET 1.

' WITNESSES M52 1%!!326 zi ayiiza yy j 71 ATTORNEYS COLUMBIA PLANOIJRAPH60-.WASHINOTON. D. c.

R. L. EGGLESTON. VENTILATOB. FOR WINDOWS. APPLICATION FILED HAYS, 1913.1,102,023 Patented June 30,1914.

I 3 SHEETS-SHEET 2.

ATTORNEYS.

R. L. EGGLBSTON.

VENTILATOR FOR WINDOWS.

APPLICATION FILED MAY a, 1913.

Patented June 30, 1914.

I 3 SHEETS-SHEET 3 3 plied to or removed from the window frame fromentering the room.

the plane of the lower sash in order to per- TED STATES PATENT FFTQFZ.

RAYMOND L. EGGLESTON, OF HOUGHTON, MICHIGAN.

VENTILATOR FOR WINDOWS.

To all whom it may concern Be it known that I, RAYMOND L. EooLn- STON, acitizen of the United States, and a resident of Houghton, in the countyof Houghton and State of Michigan, have invented a new and ImprovedVentilator for \Vindows, of which the following is a full, clear, andexact description.

This invention relates to a ventilator in the nature of an attachmentthat is applied to a window frame at the sill thereof so as to allow airto enter a room when the lower sash is partially raised, and theinvention relates more particularly to a combined screen and ventilatorof this character.

The invention has for its general object to improve and simplify theconstruction of devices of the nature referred to so as to becomparatively simple and inexpensive to manufacture, capable of beingreadily apand adapted to be held in such position that the lower sashcan be readily opened or closed while the device is in site, while atthe same time preventing flies, dirt and dust Another object of theinvention is the provision of a novel arrangement of slats which areadapted to be held in open position by a spring means so arranged as topermit the slats to close when the air is, blowing at an objectionablyhigh velocity, there being employed in connection with the slats alocking device capable of holding the slats completely or only partiallyclosed without interfering in the latter case with the automatic closingof the slats under the. wind pressure.

Another object is the employment of a simple, novel and effective meanson one. or both ends of the device for engaging in the guideways of thewindow frame for the upper sash, so as to hold the device out of mitthe'same to be opened or closed while the ventilator and screen deviceremains in position.

With these objects in view, and others as will appear as the descriptionproceeds, the invention comprises various novel features of constructionand arrangement of parts which will be more fully described hereinafterand set forth with particularity in the claim appended hereto.

In the accompanying drawings, which Specification of Letters Patent.

Application filed May 3, 1913.

illustrate one embodiment of the invention,;

Patented June 30, 1914:.

Serial No. 765,285.

and wherein similar reference characters are employed to designatecorresponding parts throughout the several views, Figure 1 is a view ofthe combined ventilator and screen applied to a window and observed fromwithin the room; Fig. 2 is a similar view showing the device from theoutside; Fig. 3 is an enlarged vertical section of the combinedventilator and screen taken on the line 33 of Fig. 4 withthe slatslocked in closed position; Fig. 4 is a sectional view 011 the line ie-4Lof Fig. 3, showing the window frame engaging device on the end of theventilator; Fig: 5is a sectional view on the line 5-5 of'Fig. 1 with theslats in open position; Fig. 6 is a detail sectional view on the line 66of Fig. 3 Fig. 7 is a sectional view showing the arrangement of the slatopening spring; Fig. 8 is a fragmentary perspective view of the windowframe engaging device on the end of the ventilator; and Fig. 9 is aperspective view of the slat closing lock.

Referring to the drawing, A designates the window frame in which ispositioned the screen ventilator B that rests on the sill 1 of thewindow frame and is positioned behind the lower sash C.

The combined screen and ventilator B is so designed that it can befitted in place without requiring any alteration in the window frame orthe application of any devices thereto for holding the ventilator, andfurthermore, the ventilator is readily removble from the window frame.

The ventilator comprises a rectangular frame consisting of upper andlower rails 1 and 2 and end rails or stiles 3. The inner is providedwith vertically-extending end plates? fastened to the stiles 3, so as toaccommodate between them the slats 8 that control the area of opening ofthe ventilator.

Extending between the vertical end plates 7 is a downwardly inclinedwater shedding strip or plate 9 which abuts the upper rail 1 andoverhangs the slats 8, thereby preventing snow, rain or dust fromentering the room through the ventilator. On the bottom rail 2'isprovided a stop strip 10 with which the lower slat 8 is adapted toengage when in closed position, the upper slat being adapted to engagethe under surface of the shedding plate 9 when the slats are closed.

The slats are each pivoted at 11 on the end plate 7, and a link member12 or bar is pivotally connected to each slat at 13 adjacent the uppercorner of the slats at one end. Flexible sealing strips 14 of leather orother material are applied on the upper outer edges of the slats and onthe stop strip 10 so that when the slats are in closed position it ispractically impossible for dust to enter through the ventilator, asclearly shown in Fig. 3.

The slats are adapted to be held yieldingly in open position by a spring15 which has one end connected with the lower slat 8 at one corn-er andthe opposite end connected with one of a series of hooks 16 on the frameof the ventilator, these hooks roviding for adjustment of the tension ofthe spring so that the slats can be made to close automatically underany desired wind preswhen in open position are inclined so that;

a substantial area is exposed to the wind which effects the closing ofthe slats when the pressure exceeds the tension of thespring. then theslats are in the open po sition shown in Fig. 10 air can freely entethrough the ventilator by passing along the slats, as will be readilyunderstood.

In order to lock the slats completely or partially closed the lockingdevice is ar ranged in such a position as to engage one of the slats.This locking device, shown clearly in Figs. 3 and 9, consists of a slide17 that is set into a groove or chamber 18 in the inner surface of oneof the stiles of the ventilator frame, and on this slide is arearwardly-extending tongue which passes through an opening 20 in theventilator frame and projects outwardly therefrom at a point where itengages the lower slat 8.; The slide 17 moves back and forth on a plate5 25 set into the chamber 18 and fastened to the frame, there being aslot 22 in the plate 21 to register with the opening 20 for al-g lowingthe slide 17 to move freely up and down. The locking device is held inposition by a spring 23 fastened at its lower end 241, 3, to theventilator frame, the spring being preferably of wire and having. 1tsstraight portion vertically disposed and engaged in a recess 25 in theside of the tongue 19, thereby preventing the tongue as the device doesnot act so freely as to slip down under the tension of the slat openingspring 15. It is to be understood that in any open position of the slatsthe wind acting on the latter will, when greater than the tension of thespring 15, close the slats so as to prevent air from entering the roomwhen the velocity of the wind is too high.

The ventilator B is designed to assume a position which will notinterfere with the closing of the lower sash, and for this purposewindow frame engaging devices 0 are provided on the end of the frame ofthe ventilator. Each window frame engaging device comprises, as shown inFigs. 4-, 6 and 8, a U-shaped member 26 which spans or receives the endof the ventilator frame and is as long as the stile thereof. The sides2'? of the U-shaped member 26 have inwardly-bent flanges 28, the member26 being of sheet metal, which flanges engage flanges 29 that projectfrom opposite sides of the stile 3 or end of the ventilator frame, saidflanges 29 being formed by the edges of a plate 30 fastened to the endsurface of the stile 3. The U-shaped member 26 carries a strip 31 thatis secured to the side 32 of the member 26 "and extends laterally fromthe latter so as to engage in the guideway or groove 38 for the uppersash of the window frame A. The member 26 is urged outwardly from theend of the ventilator frame by a spring or equivalent de- Vice 3% whichis seated in an opening or recess 35 in the stile 3, there being a guidepin 36 fastened to the member 26 and sliding through a passage 37 in thestile 3. In order to disengage the device C from the window frame it ismerely necessary to press the said device inwardly against the tensionof the spring 34-, thereby disengaging the strip 31 from the upper sashgroove 83 of the window frame, and when this disengagement is effectedthe ventilator can be bodily removed. The upper sash groove engagingstrips 31 of the device G are so positioned that the inner face of theventilator frame will be practically flush with the outer surface of thelower sash, so that when the lower sash is in open position, as shown inFig. 5, the upper rail of the ventilator frame will engage the lowerrail of the lower sash and thereby prevent flies from entering betweenthe sash and ventilator.

From the foregoing description taken in connection with the accompanyingdrawings, the advantages of the method of operation and of the apparatusshown will be readily understood by those skilled in the art to whichthe invention appertains, and while I have described the apparatus which1 now consider to be the best embodiment thereof, I desire to have itunderstood that the apparatus shown is merely illustrative, and thatsuch changes may be made when desired as are within the scope of theappended claim.

Having thus described my invention, I

claim as new and desire to secure by Letters Patent:

A ventilator comprising a frame, horizontally disposed slats pivotedtherein on horizontal axes, and said slats being connected together, theframe having a vertically-disposed opening, a member slidable in theopening and disposed in. engagement with one of the slats and movabletransversely to the axis thereof,means tending to move the slats in onedirection and opposing the movement of the said member, said memberhaving a groove disposed parallel with the line of movement thereof, anda wire element fixed on ,the frame and engaging 20 in the groove forforming the sole retaining means for the said member and permitting thelatter to slide.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

RAYMOND L. EGGLESTON.

Vitnesses FRANK BELFREY, BERT OBENHOFF.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Yatents, Washington, D. G.

